Php/docs/function.eio-nop

• PHP Manual
• Eio Functions
• Does nothing, except go through the whole request cycle

eio_nop

(PECL eio >= 0.0.1dev)

eio_nop — Does nothing, except go through the whole request cycle

Description

eio_nop ([ int $pri = EIO_PRI_DEFAULT [, callable $callback = NULL [, mixed $data = NULL ]]] ) : resource

eio_nop() does nothing, except go through the whole request cycle. Could be useful in debugging.

Parameters

pri

The request priority: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, or NULL. If NULL passed, pri internally is set to EIO_PRI_DEFAULT.

callback

callback function is called when the request is done. It should match the following prototype:

void callback(mixed $data, int $result[, resource $req]);

data

is custom data passed to the request.

result

request-specific result value; basically, the value returned by corresponding system call.

req

is optional request resource which can be used with functions like eio_get_last_error()

data

Arbitrary variable passed to callback.

Return Values

eio_nop() returns request resource on success or FALSE on error.

See Also

• eio_busy() - Artificially increase load. Could be useful in tests, benchmarking